OTHER REAL ESTATE RELATED AND OTHER INVESTMENTS - Other Real Estate Related Investments, at Fair Value (Details) $ in Thousands	6 Months Ended
Jun. 30, 2023 USD ($) property facility	Dec. 31, 2022 USD ($) facility
Real Estate Properties [Line Items]
Principal amount	$ 175,143
Book Value	$ 166,822	$ 156,368
Number of facilities \| facility	1
Senior mortgage secured loan receivable
Real Estate Properties [Line Items]
Principal amount	$ 75,000
Book Value	$ 71,488	$ 72,543
Weighted Average Contractual Interest Rate	8.40%
Senior mortgage secured loan receivable \| Skilled nursing and campus facilities
Real Estate Properties [Line Items]
Facility Count and Type \| facility	18	18
Mortgage secured loan receivable
Real Estate Properties [Line Items]
Principal amount	$ 22,250
Book Value	$ 21,208	$ 21,345
Weighted Average Contractual Interest Rate	10.60%
Mortgage secured loan receivable \| Skilled nursing facility
Real Estate Properties [Line Items]
Facility Count and Type \| facility	5	5
Mortgage secured loan receivable \| SOFR
Real Estate Properties [Line Items]
Basis spread on variable rate (percent)	5.11%
Mortgage secured loan receivable
Real Estate Properties [Line Items]
Principal amount	$ 24,900
Book Value	$ 23,503	$ 23,796
Weighted Average Contractual Interest Rate	9.00%
Mortgage secured loan receivable \| Skilled nursing facility
Real Estate Properties [Line Items]
Facility Count and Type \| facility	4	4
Mortgage secured loan receivable
Real Estate Properties [Line Items]
Principal amount	$ 2,000
Book Value	$ 2,000	$ 0
Weighted Average Contractual Interest Rate	9.00%
Extension option, term (year)	1 year
Mortgage secured loan receivable \| Assisted Living Facilities
Real Estate Properties [Line Items]
Facility Count and Type \| facility	1	1
Principal amount	$ 2,000
Mortgage secured loan receivable
Real Estate Properties [Line Items]
Principal amount	25,993
Book Value	$ 25,993	$ 0
Weighted Average Contractual Interest Rate	9.00%
Mortgage secured loan receivable \| Skilled nursing and campus facilities
Real Estate Properties [Line Items]
Facility Count and Type \| facility	2	2
Mortgage secured loan receivable \| Skilled nursing facility
Real Estate Properties [Line Items]
Principal amount	$ 26,000
Number of facilities \| property	1
Mortgage secured loan receivable \| Skilled nursing facility \| Minimum
Real Estate Properties [Line Items]
Early termination fee	0.00%
Mortgage secured loan receivable \| Skilled nursing facility \| Maximum
Real Estate Properties [Line Items]
Early termination fee	3.00%
Mortgage secured loan receivable \| Assisted and Independent Living Properties
Real Estate Properties [Line Items]
Number of facilities \| property	1
Mezzanine loans receivable
Real Estate Properties [Line Items]
Principal amount	$ 0
Book Value	$ 0	$ 14,672
Weighted Average Contractual Interest Rate	0.00%
Mezzanine loans receivable \| Skilled nursing facility
Real Estate Properties [Line Items]
Facility Count and Type \| facility	9	9
Mezzanine loan receivable
Real Estate Properties [Line Items]
Principal amount	$ 25,000
Book Value	$ 22,630	$ 24,012
Weighted Average Contractual Interest Rate	11.00%
Mezzanine loan receivable \| Skilled nursing and campus facilities
Real Estate Properties [Line Items]
Facility Count and Type \| facility	18	18
Other
Real Estate Properties [Line Items]
Principal amount	$ 10,328
Book Value	$ 10,333	$ 9,600
Weighted Average Contractual Interest Rate	8.50%
Expected credit loss	$ (2,094)	(2,094)
Principal Balance	10,328
Net increase in other real estate related investments, at fair value	$ 8,239	$ 7,506

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